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Thread: Black algae help

  1. Back To Top    #1

    Join Date
    Aug 2016
    Location
    Goodyear, AZ
    Posts
    6

    Black algae help

    I have black algae and the pool is a little cloudy. I took a water sample in to the local pool store. They said I needed to lower my phosphates which is at 1000. They said since I live near farms that's why it's high. To reduce this and get rid of the algae they said I need 1. phosphate remover 2. 6 gal of chlorine 3. 1/4 gal of acid and rub a chlorine puck directly onto the algae.
    Here's my numbers:
    Cl =0, ph =7.6, alk =200, stab =100, hardness =1000+, phosphates =1000

    All advice and help welcomed to remedy this issue and continued maintenance.
    Thanks
    18000 gal pool, echotech ez variable speed pump, ultrapure ozone generator, Polaris caretaker pop ups and jandy cl460 cart filters.

  2. Back To Top    #2

    Join Date
    Aug 2014
    Location
    Northern IL
    Posts
    4,615

    Re: Black algae help

    I would do the test listed in this article to confirm if it was black algae: Pool School - Black Algae

    If you are interested in learning about the methods we use here, know that they are contradictory with pool store methods. You can read more here: Pool School - What is TFPC?

  3. Back To Top    #3
    Mod Squad pooldv's Avatar
    Join Date
    Aug 2012
    Location
    DFW, TX
    Posts
    23,998

    Re: Black algae help

    We do not recommend phosphate removers as algae prevention. We use Chlorine to prevent algae.

    Step 1 is to get a good test kit, Pool School - Test Kits Compared. I use the TF-100 from TFTestkits.net.

    Read here, ABCs of Pool Water Chemistry
    And here, Pool School - Getting Started

    This is how we kill algae, SLAM
    More here on black algae, Pool School - Black Algae
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  4. Back To Top    #4

    Join Date
    Aug 2016
    Location
    Goodyear, AZ
    Posts
    6

    Re: Black algae help

    Thanks
    18000 gal pool, echotech ez variable speed pump, ultrapure ozone generator, Polaris caretaker pop ups and jandy cl460 cart filters.

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